The shock wave characteristics within the near-field are one of most challenging aspects understanding an underwater explosion. latest numerical and experimental techniques were utilized to investigate pressure distribution decay features after a disturbance. governing equations in simulation discretized with fifth-order weighted essentially non-oscillatory scheme space third-order Runge–Kutta ...

Abstract The local structure of the cylindrical shell produces plastic deformation under near-field underwater explosion load, based on fact that ring rib is strong support reinforced plate, this paper simplifies model into a rigid slatted beam at both ends, and lists equations beams action shock wave bubble pulsation load. This equation takes initial damage caused by account, compares calculat...

Underwater explosions are tremendously hazardous for floating structures and human life inside. When compared to an air blast, underwater blast is more effective due the effect of fluid domain. Therefore, design marine with high strength a difficult subject as well important. With rapid progression material technology, composite materials widely preferred over metals in fields defense industrie...

A behavioral response paradigm was used to measure masked underwater hearing thresholds in two bottlenose dolphins and one beluga whale before and after exposure to impulsive underwater sounds with waveforms resembling distant signatures of underwater explosions. An array of piezoelectric transducers was used to generate impulsive sounds with waveforms approximating those predicted from 5 or 50...

Adaptive solution techniques are presented for simulating underwater explosions and implosions. The liquid is assumed to be an adiabatic fluid and the solution in the gas is assumed to be uniform in space. The solution in the water is integrated in time using a semi-implicit time discretization of the adiabatic Euler equations. Results are presented either using a non-conservative semi-implicit...